Ok,Its 1 of the levels that you fight the Elves on the Undead campain and in the Eastern/North-Eastern part of the map is a path of hollow trees(if you see Lil' timmy click on the area you'll be there)and go to Lil' timmy,he sells ice shardes and Lesser Ice shardes.He will sell 3 at a time with Lesser ice shardes and with ice shardes he sells 2 at a time but alot slower.Hoped this helped!o_0